Adopted twins and the girl is psychotic and kills animals and hurts her brother

A young boy stays with his aunt and uncle, and befriends his cousin who's the same age. But his cousin begins showing increasing signs of psychotic behavior.

The unbelievable story of 22 year old Or, who secretly finances his sex change operation in Thailand by lying to his conservative parents and then returns home as a woman to face her new life, her family and the cost of living her dream

A suburban family chooses seemingly sweet Peyton Flanders as their newborn's nanny. Only much later does the infant's mother, Claire Bartel, realize Peyton's true intentions -- to destroy Claire and replace her in the family. The nail-biting suspense builds quickly in this chilling psychological thriller about deception and bitter revenge.

A doctor's wife is arrested for educating impoverished women about birth control.

A girl is possessed and kills her own twin sister.

Following the death of their mother, an identical twin pulls away to establish her own independence, while the other unravels and plots to end her sister’s new beginning. Inspired by true events.

Identical twins witness the murder of their mother and are seperated. One is locked in a closet for 18 years while the other inherits the family fortune. An insane Nanny lets the retarded brother out of the closet and all hell brakes loose.

The massacre of the Levi family, of which only adopted twins Eva and Greta survive, pits priests Father Michel and Father Paul against the powers of evil, both convinced that the twins are diabolical.

Channeling sibling rivalries and deadly childhood pacts, this series follows true-crime mysteries surrounding cases of these double-duty archetypes.

A sister and her disturbed twin are implicated in a murder and a police detective must figure out which one's the killer.